International law consists of rules and principles that govern relations between sovereign states and other subjects of international law. It's derived from four principal sources: treaties and conventions, customary international law (state practices followed from a sense of legal obligation), general principles of law recognized by civilized nations, and judicial decisions/scholarly writing (used when other sources fail).
International law operates through consent—no global government exists to enforce it like domestic courts enforce national law. The United Nations, International Court of Justice, and regional bodies oversee disputes, but enforcement depends on nations' willingness to comply or submit to rulings. Treaties can conflict with domestic law; U.S. courts generally won't enforce treaty provisions that contradict statute unless Congress enacted implementing legislation.
Issues falling under international law include trade, human rights, diplomacy, environmental protection, war crimes, and piracy. Public international law governs state-to-state relations; private international law addresses conflicts when multiple nations' laws apply to private actors. In recent decades, these have overlapped as multinational corporations and international litigation have blurred the line.
International law provides the framework for states to cooperate without military conflict. Its effectiveness depends on nations' commitment to compliance, making power politics and self-interest central to whether international law actually constrains state behavior.
People think international law is like domestic law—that courts enforce it and violations result in punishment. International law relies on reciprocity and reputation; enforcement is weak and depends on powerful nations' interests.
International law provides the framework for states to cooperate without military conflict. Its effectiveness depends on nations' commitment to compliance, making power politics and self-interest central to whether international law actually constrains state behavior.
People think international law is like domestic law—that courts enforce it and violations result in punishment. International law relies on reciprocity and reputation; enforcement is weak and depends on powerful nations' interests.